Topic: 2000 tj brakes

[garydubf]

Hey guys , this will be my first post.  Ive intro'd in the mess hall so here goes.  I'm building dana 44's for my 2000 tj and need som help with brake issues!  I am no longer going to run anti-lock brakes but a I am converting to disks in the rear.  I think I need to get a rubicon proportioning valve for it?  Also, anybody know if I can remove the anti- :beers:lock brake manifold or maybe swap in adifferent master cyl.?

[lanulos89]

i dont think you'd have to swap masters, the front will still have to do most of the braking, and the rears will still do same percent, swaping the masters would change that.  the brakes will still work, discs would just work bettter than drums for obv. reasons.

[Jeffy]

The proportioning valve will regulate how much pressure goes to the front vs. the rear.  Since discs require more pressure, using a proportioning valve set up for drums may leave the rear discs not getting enough pressure.  This would leave the front to do more then their share.  I'd probably run it like it is then if you need to change things you could remove the pill and spring that regulates the pressure.  Then if you really wanted to regulate it more you could put a inline adjustable proportioning valve in.  Unless you're running TJ/ZJ discs you'll probably want a bit more pressure.

As for ABS, how much of the Jeep was the ABS controlling.  (ie, was it 2 wheels or 4 wheels?)  You can usually pull the ABS fuse to disable it from what I've been told.  If you really wanted to get rid of it, you could swap parts out and convert it over to a non-abs setup.  You could probably plug the additional ports with screw-in caps.

[garydubf]

Thanks for the input.  Now that you mention it, I all ready have an adjustable proportioning valve if I need it.  I could probably clean all the ABS stuff out from under the hood?  The rear axle is out of a Scout II.  I'll use GM caliper and a Ford rotor.  No ABS on a Scout II, so no need to convert to ABS.  Want to keep things simple.  Besides if I do some house keeping under the hood I get more room for other goodies ie.. welder ,onboard air , ect..

[Bounty Hunter]

If you wanted to keep it simple you could have scored a rear D44 with discs from the factory, like the 'Zu Rodeo.

Consider a master cylinder from an all-disc application.  '68 vette and '70s Marquis seem to be popular.  Then a prop valve from an all-disc application like the Rubicon or Grand.

I've got 4-wheel disc on my D44's with the stock YJ MC and Prop valve, and it brakes okay with 35" tires.  Considering upgrading the MC and prop valve myself.

[Mozman68]

What are you doing for an emergency brake....or are you getting rid of it??

[garydubf]

I plan on installing line locks front and rear.  Electric over hydraulic type.

[Jeffy]

I plan on installing line locks front and rear.  Electric over hydraulic type.

Keep in mind that that's not a legal setup.  Although the chances of someone spotting it are slim if they don't do safety inspections there.  The real problem is if you use them on the street.  Line locks will slowly loose pressure with time which is why the DOT won't certify them for Parking brake status.  For a trail Jeep, it's not really a problem but on a Daily driver, it can be an issue.

[garydubf]

No inspections here!  The jeep sees more trail anymore than street. With the parking brake I am more interested in function on a run than I am at the Walmart!